201311232 has 88 divisors (see below), whose sum is σ = 564972000. Its totient is φ = 63553536.

The previous prime is 201311219. The next prime is 201311239. The reversal of 201311232 is 232113102.

201311232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (201311239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56644 + ... + 60092.

Almost surely, 2^201311232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201311232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282486000).

201311232 is an abundant number, since it is smaller than the sum of its proper divisors (363660768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201311232 is a wasteful number, since it uses less digits than its factorization.

201311232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491 (or 3473 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 201311232 is about 14188.4189394027. The cubic root of 201311232 is about 586.0787866749.

Adding to 201311232 its reverse (232113102), we get a palindrome (433424334).

The spelling of 201311232 in words is "two hundred one million, three hundred eleven thousand, two hundred thirty-two".